AspectRatio -> 1 vs AspectRatio ->1.25

*To*: mathgroup at smc.vnet.net*Subject*: [mg122747] AspectRatio -> 1 vs AspectRatio ->1.25*From*: John Accardi <johnaccardi at comcast.net>*Date*: Wed, 9 Nov 2011 06:25:37 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com

Goal: Plot both y = x and y = -x such that then intersect visually at 90 degrees. Intuitively, AspectRatio -> 1 should do this but it takes AspectRatio -> 1.25 to accomplish this. Am I missing something? Why 1.25 and not 1? Example: << Graphics`ImplicitPlot`; ImplicitPlot[{7 x^2 - 6 Sqrt[3] x y + 13 y^2 - 16 == 0, ((x^2)/2^2) + ((y^2)/2^2) == 1, y == x, y == -x}, {x, -3, 3}, AspectRatio -> 1.25] Produces the desired plot using AspectRatio -> 1.25. Thanks for any insights.

**Follow-Ups**:**Re: AspectRatio -> 1 vs AspectRatio ->1.25***From:*DrMajorBob <btreat1@austin.rr.com>